Which complication of fractures is a result of excessive callus formation at the fracture site?

Before applying a cast, the nurse should obtain a baseline neurovascular assessment of the extremity to establish normal function. This assessment will serve as a reference for comparison throughout the cast's application and during the healing process.

a. Elevating the extremity to reduce swelling is a valuable intervention but is not directly related to applying a cast. It can be performed later as part of post-cast application care.
b. Applying ice packs to the fracture site can help reduce swelling and pain but is not a step in preparing for the cast application.
c. Administering analgesics to manage pain is important, but obtaining a baseline neurovascular assessment is the priority before applying a cast.

Colles' fracture is a type of distal radius fracture that results in angulation and swelling of the distal forearm near the wrist joint.

a. Pain and swelling of the ankle: Pain and swelling of the ankle are not related to a Colles' fracture, which occurs in the distal forearm, not the ankle.
b. Deformity and shortening of the affected limb: Deformity and shortening of the limb may occur in some fractures but are not specific to a Colles' fracture.
c. Loss of sensation and motor function distal to the fracture: Loss of sensation and motor function may occur in nerve injuries associated with fractures, but it is not a characteristic of Colles' fracture.